CN114567115A - Hydraulic motor pump with forced flow heat dissipation function - Google Patents

Hydraulic motor pump with forced flow heat dissipation function Download PDF

Info

Publication number
CN114567115A
CN114567115A CN202210261505.8A CN202210261505A CN114567115A CN 114567115 A CN114567115 A CN 114567115A CN 202210261505 A CN202210261505 A CN 202210261505A CN 114567115 A CN114567115 A CN 114567115A
Authority
CN
China
Prior art keywords
motor
rotating shaft
transmission shaft
pump
end cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202210261505.8A
Other languages
Chinese (zh)
Other versions
CN114567115B (en
Inventor
李东林
刘明伟
赵峰
杨芳
王帅
王军华
李阁强
徐莉萍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan University of Science and Technology
Original Assignee
Henan University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Henan University of Science and Technology filed Critical Henan University of Science and Technology
Priority to CN202210261505.8A priority Critical patent/CN114567115B/en
Publication of CN114567115A publication Critical patent/CN114567115A/en
Application granted granted Critical
Publication of CN114567115B publication Critical patent/CN114567115B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
    • F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
    • F04B1/2014—Details or component parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/08—Cooling; Heating; Preventing freezing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention belongs to the technical field of motor pumps, and particularly relates to a hydraulic motor pump with a forced flow heat dissipation function. The rotating shaft of the motor of the hydraulic motor pump with the forced flow heat dissipation function is provided with a rotating shaft cavity communicated with the transmission shaft cavity, a fixed sleeve with a cavity is fixed in the rotating shaft cavity, a spiral pumping structure used for pumping fluid in the direction far away from the transmission shaft is arranged in the fixed sleeve, an end cover cooling flow channel communicated with the rotating shaft cavity is arranged on a motor end cover, a motor shell cooling flow channel communicated with the end cover cooling flow channel is arranged on a motor shell, and the motor shell cooling flow channel is provided with a fluid outlet for the fluid to flow out. When the motor pump works, fluid in the rotating shaft cavity can cool the rotating shaft and the rotor, so that the temperature of the rotating shaft and the rotor is reduced, fluid in the motor casing cooling flow channel can cool the stator, the temperature of the stator is reduced, finally, the temperature of the whole motor is reduced, the influence of high temperature on the motor is reduced, and the performance of the motor pump is improved.

Description

Hydraulic motor pump with forced flow heat dissipation function
Technical Field
The invention belongs to the technical field of motor pumps, and particularly relates to a hydraulic motor pump with a forced flow heat dissipation function.
Background
The hydraulic motor pump is a structure integrating a traditional motor, a coupler and a hydraulic pump in series connection, has the advantages of good dynamic characteristic, light weight, small structural size, simplicity in installation and maintenance, convenience in system integration and the like, and has wide application prospects in aerospace, robots and other mobile platforms.
The Chinese invention patent application with the application publication number of CN114001007A discloses an inclined shaft plunger type hydraulic motor pump, wherein a motor of the motor pump comprises a rotor and a stator, the rotor is fixedly connected with a motor shaft, the motor shaft is in transmission connection with a transmission shaft, the transmission shaft is in transmission connection with an inclined shaft pump assembly, the inclined shaft pump assembly comprises an inclined shell and a pump end cover, a flow distribution plate is fixed on the pump end cover, a cylinder body in transmission connection with the transmission shaft through a bevel gear is arranged in the inclined shell, a plunger connecting rod inserted in the cylinder body is movably hinged on the transmission shaft through a ball hinge seat, a plunger is fixed on the plunger connecting rod, a liquid inlet and a liquid outlet which are the same as the flow distribution plate are arranged on the pump end cover, when in use, the transmission shaft drives the cylinder body to rotate, the plunger connecting rod on the transmission shaft drives a plunger hole of the plunger to reciprocate in the cylinder body, so that a closed cavity formed by the plunger and the plunger hole is periodically changed, when the working medium is larger than the sealed cavity, the working medium is sucked into the sealed cavity through the liquid inlets in the pump end cover and the valve plate to finish the suction process, the sealed cavity is reduced along with the rotation of the cylinder body, the pressure of the working medium is reduced, and finally the working medium is discharged from the sealed container through the liquid outlets in the pump end cover and the valve plate to finish the discharge process. Because the sealing requirement of the inclined shell is high except for the sealing requirement of the sealing cavity, the sealing requirements of other structures are not high, and therefore working media can exist near the joint of the transmission shaft and the cylinder body in the inclined shell in the working process.
When the motor is used, the rotor and the motor shaft rotate at a high speed relative to the stator, and the rotor and the motor shaft generate relative friction with other structures in the rotating process to generate heat; and the inside of the motor is provided with a winding coil, and the coil has large resistance, so the motor generates heat when being electrified. Resulting in an increase in the temperature inside the motor, which can lead to poor performance of the hydraulic motor pump at higher temperatures.
In order to solve the cooling problem of the hydraulic motor pump, in the prior art, the rotor of the motor and the moving part of the hydraulic pump are usually soaked in a working medium, and the working medium is used for cooling the rotor and the moving part of the hydraulic pump. However, the heat dissipation method also has corresponding problems, specifically, on one hand, the mobility of the working medium in the cavity enclosed in the hydraulic motor pump is poor, which leads to general heat dissipation effect; on the other hand, a rotor of the motor rotates at a high speed relative to a stator, and stirring working media generates viscous friction loss and is converted into heat; under the combined action of the two, the cooling effect of the cooling mode is not ideal, and the performance of the hydraulic motor pump is poor.
Disclosure of Invention
The invention aims to provide a hydraulic motor pump with a forced flow heat dissipation function, and aims to solve the problem that the performance of the hydraulic motor pump in the prior art is poor due to high internal temperature when the hydraulic motor pump is used.
The technical scheme of the hydraulic motor pump with the forced flow heat dissipation function is as follows:
the utility model provides a hydraulic motor pump with forced flow heat dissipation function, includes hydraulic pump, motor and transmission shaft, the motor includes stator, rotor, motor casing and pivot, and pivot and rotor fixed connection just drive by the rotor, the one end and the pivot fixed connection of transmission shaft, the other end and the hydraulic pump transmission of transmission shaft are connected, the hydraulic pump includes pump case and the rotation piece of being connected with the transmission shaft transmission, has the fluid chamber in the pump case, the transmission shaft has the transmission shaft chamber with the fluid chamber intercommunication, fluid can get into the transmission shaft chamber from the fluid chamber when rotating the rotation piece, the pivot has the pivot chamber with transmission shaft chamber intercommunication, the pivot intracavity is fixed with the fixed cover that has the cavity, be provided with in the fixed cover and be used for the spiral pumping structure of fluid to the direction pump sending of keeping away from the transmission shaft, the one end that the transmission shaft was kept away from to the pivot is connected with the motor end cover, the motor end cover is provided with an end cover cooling flow channel communicated with the rotating shaft cavity, the rotating shaft is matched with the motor end cover in a rotating and sealing mode, the motor shell is provided with a motor shell cooling flow channel communicated with the end cover cooling flow channel, and the motor shell cooling flow channel is provided with a fluid outlet for fluid to flow out.
The invention has the technical effects that: according to the hydraulic motor pump, when the hydraulic motor pump works, a rotating part in the hydraulic pump can drive fluid to enter a transmission shaft cavity from a fluid cavity of the hydraulic pump, and the rotating shaft is also provided with a rotating shaft cavity communicated with the transmission shaft cavity, so that the fluid further enters the rotating shaft cavity, the rotor drives the rotating shaft to rotate, and a spiral pumping structure in the rotating shaft cavity drives the fluid to be pumped in a direction far away from a motor shaft and sequentially enters an end cover cooling flow channel and a motor shell cooling flow channel.
Further, the fixed sleeve is movably fitted with a center rod, the spiral pumping structure is disposed between the center rod and the fixed sleeve, and the center rod is disposed on the motor end cover to restrict the center rod from rotating with the fixed sleeve.
The beneficial effects are that: because the fixed sleeve can rotate along with the rotating shaft, relative motion can occur between the central rod and the fixed sleeve, so that the central rod can promote the motion of fluid, the pumping efficiency of the fluid is improved, and the cooling effect is improved.
Further, the central rod is a spiral rod capable of floating in the radial direction of the rotating shaft, a spiral groove is formed in the inner wall surface of the fixed sleeve, and the spiral pumping structure is composed of the outer peripheral surface of the spiral rod and the spiral groove.
The beneficial effects are that: the fluid pressurization effect is better by utilizing the pumping principle of the screw pump.
Furthermore, a floating shaft in the rotating shaft cavity is movably arranged on the motor end cover, a central rod is hinged to the floating shaft, and the central rod is arranged on the motor end cover through the floating shaft so as to float in the radial direction of the rotating shaft.
The beneficial effects are that: the floating shaft is hinged with the center rod, so that the center rod can be conveniently installed.
Furthermore, a guide sleeve is fixed on the motor end cover, one end of the guide sleeve is fixed on the end cover, the other end of the guide sleeve is hinged with the floating shaft, and the guide sleeve extends into the rotating shaft cavity.
The beneficial effects are that: the arrangement length of the floating shaft in the rotating shaft cavity can be reduced by arranging the flow guide sleeve, so that the swing range of the floating shaft is large, and the up-down floating range of the central rod can be enlarged.
Furthermore, the rotating shaft is matched with the motor end cover in a rotating and sealing mode through a mechanical sealing structure, the mechanical sealing structure comprises a movable ring, a static ring and an elastic element, the movable ring is sleeved on the rotating shaft and is located between the elastic element and the static ring in the axial direction of the rotating shaft, and the elastic element presses the movable ring on the static ring so that the static ring is pressed on the motor end cover.
The beneficial effects are that: through setting up sealing device, prevent that the fluid from getting into between motor rotor, the stator to avoid producing extra viscidity friction loss, improve the efficiency of motor. And the mechanical sealing structure has reliable structure and long service life, and the friction pair is attached by means of elasticity and fluid pressure, so that the adjustment is not needed in the operation process.
Further, the motor casing includes casing inlayer and casing skin, motor casing cooling flow is said and is set up on the outer peripheral face of casing inlayer.
The beneficial effects are that: the motor casing is divided into an inner layer and an outer layer, and the motor casing cooling flow channel is arranged on the outer peripheral surface of the inner layer of the casing, so that the machining process of the motor casing cooling flow channel is simple.
Further, the motor casing cooling flow channel is a spiral flow channel.
The beneficial effects are that: set up the spiral runner on the casing inlayer and as motor casing cooling runner, can increase the channel length of motor casing cooling runner to it is longer to make the time that the fluid stayed on the motor casing, makes the fluid better to the cooling effect of motor casing.
Further, the rotating shaft and the transmission shaft are fixed through a transmission shaft connecting bolt.
The beneficial effects are that: the rotating shaft and the transmission shaft are fixedly connected together through the transmission shaft connecting bolt, so that the dismounting and mounting processes are convenient.
Furthermore, the one end of being connected with the transmission shaft in the pivot is provided with the installation blind hole, and the hole bottom of installation blind hole is equipped with the pivot through-flow hole that communicates transmission shaft chamber and pivot chamber, and the hole bottom of installation blind hole is provided with and supplies transmission shaft connecting bolt to twist the screw hole with fixed transmission shaft and pivot, and the tip that the transmission shaft inserted pivot one end is provided with the connecting plate, is provided with the bolt perforation that supplies transmission shaft connecting bolt to pass on the connecting plate, still is equipped with the transmission shaft through-flow hole with pivot through-flow hole intercommunication on the connecting plate.
The beneficial effects are that: the transmission shaft connecting bolt is hidden in the rotating shaft cavity, so that the occupied space of the connecting structure is reduced, and the miniaturization design of the hydraulic motor pump is realized.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic motor pump with a forced flow heat dissipation function according to the present invention;
FIG. 2 is a schematic structural view of the motor of FIG. 1;
FIG. 3 is a schematic structural diagram of the left end cover, the right end cover, the motor housing and the oil return joint in FIG. 2;
FIG. 4 is a schematic structural view of the spindle of FIG. 2;
description of reference numerals:
1. sealing the end cap; 2. a right motor end cover; 21. an end cover cooling flow channel; 3. a rolling bearing; 4. an outer layer of the housing; 41. a right flow passage; 42. a left flow channel; 5. an inner layer of the housing; 51. a spiral flow channel; 52. a sealing groove of the inner layer of the shell; 6. a stator; 7. a coil; 8. a left end cap; 9. an oil return joint; 10. a straight shell; 11. a drive shaft; 12. locking the nut; 13. a rotor positioning ring; 14. a rotating shaft; 141. supporting the bore section; 142. a rotating shaft sealing groove; 143. an internal spline groove section; 144. a through-flow hole of the rotating shaft; 145. a threaded hole; 146. a limiting shoulder; 15. a rotor; 16. fixing a sleeve; 17. a screw rod; 18. a floating shaft; 19. a flow guide sleeve; 20. and (4) a mechanical sealing structure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …," or the like, does not exclude the inclusion of such elements as a process, method, or the like.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from specific situations.
The present invention will be described in further detail with reference to examples.
The specific embodiment 1 of the hydraulic motor pump with forced flow heat dissipation function provided by the invention is as follows:
as shown in fig. 1, the hydraulic motor pump with forced flow heat dissipation function of the present invention includes a motor, a hydraulic pump and a transmission shaft 11, wherein the motor includes a motor housing, a stator 6, a rotor 15 and a rotating shaft 14, a coil 7 is disposed in the stator 6, the rotor 15 is sleeved on the rotating shaft 14 and fixed by a rotor positioning ring 13, and the rotating shaft 14 is driven to rotate by the rotor 15. In this embodiment, the hydraulic pump is an oblique axis pump, and the specific structure of the hydraulic pump is the same as that of the oblique axis pump in the chinese patent application with application publication No. CN114001007A, and the specific structure of the oblique axis pump is not a protection point of the present invention, and therefore, the detailed description thereof is omitted.
As shown in fig. 1, a left end cover 8 is disposed at the left end of the motor casing, a right end cover is disposed at the right end, the right end cover includes a right motor end cover 2 and a sealing end cover 1 fixed on the right motor end cover 2, the left and right ends of the rotating shaft 14 are supported in the corresponding left end cover 8 and right motor end cover 2 through rolling bearings 3, the rolling bearings 3 are angular contact ball bearings, and can bear axial force and radial force, wherein two rolling bearings 3 are disposed at the left end of the rotating shaft 14, and one rolling bearing 3 is disposed at the right end. Both ends all are equipped with the bearing and have seted up the external screw thread about pivot 14, all are equipped with lock nut 12 on the external screw thread of both ends about, and through lock nut 12 and the cooperation of shaft shoulder with antifriction bearing 3 carry out axial locking. The transmission shaft 11 is covered with a straight shell 10, the right end of the straight shell 10 is fixedly arranged on the left end cover, and the pump shell of the hydraulic pump is fixedly connected with the left end of the straight shell 10.
As shown in fig. 1 and 4, the transmission shaft 11 and the rotation shaft 14 of the present invention are hollow shafts, so as to form a transmission shaft cavity in the transmission shaft 11 and a rotation shaft cavity in the rotation shaft 14, respectively, the left side of the rotation shaft 14 is provided with a mounting blind hole into which the transmission shaft 11 is inserted, the bottom of the mounting blind hole is provided with a threaded hole 145 and a rotation shaft through hole 144, the left side of the bottom of the mounting blind hole is provided with a support inner hole section 141, a rotation shaft sealing groove 142 and an inner spline groove section 143, the end of the transmission shaft 11 inserted into the rotation shaft 14 is provided with a connecting plate, the connecting plate is provided with a bolt through hole, the connecting plate is further provided with a transmission shaft through hole communicated with the rotation shaft through hole 144, when mounting, the transmission shaft 11 is inserted into the rotation shaft 14 and is fixedly connected with the bolt through a transmission shaft connecting bolt inserted into the bolt through hole and the threaded hole 145, the support inner hole section 141 can be matched with the support outer circle section of the transmission shaft 11, thereby support transmission shaft 11, be equipped with the sealing washer in the pivot seal groove 142, inside the sealing washer can prevent that the liquid in the hydraulic pump chamber from flowing into the motor through the clearance between pivot 14 and the transmission shaft 11, it has the outer spline section to open on the transmission shaft 11, under the cooperation of inner spline groove section 143 and outer spline section, pivot 14 can be with torque transfer for transmission shaft 11, make to pass power more stable, reliable.
As shown in fig. 1, a limiting shoulder 146 is disposed in a rotating shaft cavity of the rotating shaft 14, a fixing sleeve 16 having a cavity is disposed at the limiting shoulder 146, an inner wall surface of the fixing sleeve 16 is provided with a spiral groove, a flow guide sleeve 19 inserted into the rotating shaft cavity is fixed on a right end cover, a floating shaft 18 is hinged to a left end of the flow guide sleeve 19 through a pin, a spiral rod 17 serving as a central rod is hinged to a left end of the floating shaft 18, so that the spiral rod 17 can float in a radial direction of the rotating shaft 14, when the rotating shaft 14 drives the fixing sleeve 16 to rotate, the spiral rod 17 cannot rotate, wherein an outer peripheral surface of the spiral rod 17 and the spiral groove in the fixing sleeve 16 jointly form a spiral pumping structure, and the spiral pumping structure can push fluid (oil or water, etc.) to flow in a direction away from the transmission shaft 11.
As shown in fig. 1, the flow guide sleeve 19 includes a hinge section and an installation section, wherein the hinge section is used for hinging the floating pin, the installation section has a blind hole, the blind hole is sleeved on a boss of the end cover 1, a fluid through hole is arranged at the bottom of the blind hole, an end cover cooling flow passage 21 communicated with the blind hole is arranged on the boss of the end cover 1 and a cover body part of the end cover 1, an end cover cooling flow passage 21 is also arranged on the right motor end cover 2, and the end cover cooling flow passage 21 on the right motor end cover 2 is communicated with the end cover cooling flow passage 21 on the end cover 1.
As shown in fig. 2 and fig. 3, in this embodiment, the motor casing has a double-layer structure, and includes a casing inner layer 5 and a casing outer layer 4, a spiral flow passage 51 serving as a motor casing cooling flow passage is disposed on an outer peripheral surface of the casing inner layer 5, a right flow passage 41 is disposed on a right side of the casing outer layer 4, one end of the right flow passage 41 is communicated with an end cover cooling flow passage 21 on the right motor end cover 2, the other end is communicated with a liquid inlet at a right end of the spiral flow passage 51, a left flow passage 42 is disposed on a left side of the casing outer layer 4, the right end of the left flow passage 42 is communicated with a liquid outlet at a left end of the spiral flow passage 51, a left end of the left flow passage 42 is used as a fluid outlet, an oil return joint 9 is disposed at the fluid outlet, and the oil return joint 9 is used for connecting an oil return pipe to guide an outflowing fluid into a fluid containing box. In addition, a casing inner seal groove 52 for installing a seal ring is provided on each of the left and right sides of the spiral flow passage 51 on the casing inner 5, and fluid is prevented from entering the motor from a gap between the casing inner 5 and the casing outer 4 by providing the seal ring in the casing inner seal groove 52.
In order to prevent liquid in the cavity of the rotating shaft 14 from entering the motor, a mechanical sealing structure 20 is arranged at the right end face of the rotating shaft 14, the mechanical sealing structure 20 comprises a moving ring, a static ring and a spring, the moving ring, the static ring and the spring are sleeved on the rotating shaft 14, one end of the spring is tightly pressed on the locking nut 12, and the moving ring is tightly pressed on the static ring by the other end of the spring so that the static ring is pressed on the end cover.
When the spiral pumping structure is used, after the motor is started, the rotor 15 of the motor drives the rotating shaft 14 to rotate, the rotating shaft 14 drives the transmission shaft 11 to rotate so as to rotate a cylinder body of the hydraulic pump, fluid in a fluid cavity of the pump shell is driven to the transmission shaft 11 and sequentially enters the transmission shaft cavity and the rotating shaft cavity, the rotating shaft 14 drives the fixed sleeve 16 to rotate when rotating, so that the spiral pumping structure works, the fluid in the rotating shaft cavity is sequentially pumped into the end cover cooling flow channel 21, the right flow channel 41, the spiral flow channel 51 and the left flow channel 42 and finally flows back to the fluid tank through the oil return connector 9, and the fluid in the whole process completes one-time circulation flow. In the process, the fluid in the rotating shaft cavity cools the rotating shaft 14 and the rotor 15 fixedly connected with the rotating shaft 14, the temperatures of the rotating shaft 14 and the rotor 15 are reduced, the fluid in the spiral flow channel 51 on the shell inner layer 5 cools the stator 6, and the temperature of the stator 6 is reduced, so that the effective cooling of the motor is realized, and the working performance of the motor pump is improved.
The specific embodiment 2 of the hydraulic motor pump with the forced flow heat dissipation function provided by the invention is as follows:
the inner wall of the fixing sleeve in embodiment 1 is provided with a spiral groove, a spiral rod serving as a central rod is inserted into the fixing sleeve, and the outer peripheral surface of the spiral rod and the spiral groove jointly form a spiral pumping structure. In this embodiment, unlike embodiment 1, the inner wall of the fixed sleeve is provided with a spiral groove, the fixed sleeve is not inserted with a central rod, and the spiral pumping structure is formed only by the spiral groove.
The specific embodiment 3 of the hydraulic motor pump with forced flow heat dissipation function provided by the invention:
the central rod in example 1 is a screw rod. In the present embodiment, unlike embodiment 1, the outer peripheral surface of the center rod is a rod having a helical blade.
The specific embodiment 4 of the hydraulic motor pump with forced flow heat dissipation function provided by the invention is as follows:
the inner wall of the fixing sleeve in embodiment 1 is provided with a spiral groove, a spiral rod serving as a central rod is inserted into the fixing sleeve, and the outer peripheral surface of the spiral rod and the spiral groove jointly form a spiral pumping structure. In this embodiment, unlike embodiment 1, the inner wall of the fixing sleeve is provided with a helical blade, and the helical blade forms a helical pumping structure.
The specific embodiment 5 of the hydraulic motor pump with the forced flow heat dissipation function provided by the invention is as follows:
in embodiment 1, the motor casing is a double-layer structure including a casing inner layer and a casing outer layer, and the motor casing cooling flow channel is provided on the outer peripheral surface of the casing inner layer. In this embodiment, different from embodiment 1, the motor casing is a single-layer structure, and is formed by injection molding, and the motor casing cooling flow channel is disposed inside the motor casing.
The specific embodiment 6 of the hydraulic motor pump with forced flow heat dissipation function provided by the invention is as follows:
in embodiment 1, the motor casing cooling flow passage is provided on the outer peripheral surface of the casing inner layer. In this embodiment, unlike embodiment 1, the motor case cooling flow passage is provided on the inner peripheral surface of the case outer layer.
The specific embodiment 7 of the hydraulic motor pump with forced flow heat dissipation function provided by the invention is as follows:
in embodiment 1, the motor casing cooling flow channel is a spiral flow channel, a liquid inlet at the right end of the spiral flow channel is communicated with the right flow channel, and a liquid outlet at the left end of the spiral flow channel is communicated with the left flow channel. In this embodiment, different from embodiment 1, the motor casing cooling flow channel includes a plurality of straight flow channels that are uniformly distributed on the outer peripheral surface of the inner layer of the casing and are parallel to the axis of the inner layer of the casing, and also includes annular flow channels that are arranged at the left and right ends of the straight flow channels and are communicated with the end portions of the straight flow channels, the annular flow channel at the right side is communicated with the right flow channel, and the annular flow channel at the left end is communicated with the left flow channel.
The specific embodiment 8 of the hydraulic motor pump with forced flow heat dissipation function provided by the invention is as follows:
in the embodiment 1, a blind installation hole is formed in one end, connected with the transmission shaft, of the rotating shaft, a threaded hole for the transmission shaft connecting screw to be screwed in to fix the transmission shaft and the rotating shaft is formed in the bottom of the blind installation hole, and the transmission shaft connecting screw is hidden in the rotating shaft cavity during installation. In this embodiment, unlike embodiment 1, a flange is provided on the outer peripheral surface of the end of the rotating shaft connected to the transmission shaft, a flange is also provided on the outer peripheral surface of the end of the transmission shaft connected to the rotating shaft, and the rotating shaft and the transmission shaft are fixedly connected by a transmission shaft connecting screw inserted into the flanges of the rotating shaft and the transmission shaft.
The specific embodiment 9 of the hydraulic motor pump with forced flow heat dissipation function provided by the invention:
in embodiment 1, a guide sleeve inserted into the cavity of the rotating shaft is fixed on the right end cover, the left end of the guide sleeve is hinged to a floating shaft through a pin, and the left end of the floating shaft is hinged to a screw rod serving as a central rod. In this embodiment, unlike embodiment 1, the floating pin is directly hinged to the right end cover.
The specific embodiment 10 of the hydraulic motor pump with forced flow heat dissipation function provided by the invention is as follows:
the center rod in embodiment 1 is floated in the radial direction on the rotating shaft by the guide sleeve and the floating shaft. In this embodiment, be provided with the guide way along the radial extension of pivot on the right-hand member lid, the one end of well core rod is equipped with the uide pin that can freely slide in the guide way to it floats to realize well core rod upwards in the pivot.
Finally, it should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and equivalents can be made in the technical solutions described in the foregoing embodiments without inventive effort, or some technical features of the present invention may be substituted with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a hydraulic motor pump with forced flow heat dissipation function, includes hydraulic pump, motor and transmission shaft (11), the motor includes stator (6), rotor (15), motor casing and pivot (14), and pivot (14) and rotor (15) fixed connection just drive by rotor (15), the one end and pivot (14) fixed connection of transmission shaft (11), the other end and the hydraulic pump transmission of transmission shaft (11) are connected, the hydraulic pump includes pump case and the rotation piece of being connected with transmission shaft (11) transmission, has the fluid chamber in the pump case, transmission shaft (11) have the transmission shaft chamber with the fluid chamber intercommunication, fluid can get into the transmission shaft chamber from the fluid chamber when rotating, a serial communication port, pivot (14) have the pivot chamber with transmission shaft chamber intercommunication, the pivot intracavity is fixed with fixed cover (16) that have the cavity, be provided with in fixed cover (16) and be used for the fluid to keeping away from the spiral shell (16) of the direction pumping of transmission shaft (11) with the fluid The rotary pump structure, the one end that transmission shaft (11) was kept away from in pivot (14) is connected with the motor end cover, is equipped with on the motor end cover with end cover cooling runner (21) of pivot chamber intercommunication, pivot (14) and motor end cover rotary seal cooperation, be equipped with on the motor casing with the motor casing cooling runner of end cover cooling runner intercommunication (21), motor casing cooling runner has the fluid outlet that supplies the fluid outflow.
2. Hydraulic motor pump with forced flow heat dissipation according to claim 1, characterized in that said harness (16) is internally mobile fitted with a central rod, said helical pumping structure being arranged between the central rod and the harness (16), said central rod being arranged on the motor end cap to limit the rotation of the central rod with the harness (16).
3. The hydraulic motor pump with forced flow heat dissipation function according to claim 2, wherein the central rod is a screw rod (17) capable of floating in a radial direction of the rotating shaft (14), a spiral groove is provided on an inner wall surface of the fixed sleeve (16), and the spiral pumping structure is composed of an outer circumferential surface of the screw rod (17) and the spiral groove.
4. The hydraulic motor pump with forced flow heat dissipation function according to claim 3, characterized in that a floating shaft (18) is movably arranged on the motor end cover in the rotating shaft cavity, a central rod is hinged on the floating shaft (18), and the central rod is arranged on the motor end cover through the floating shaft (18) so as to enable the central rod to float in the radial direction of the rotating shaft (14).
5. The hydraulic motor pump with forced flow heat dissipation function according to claim 4, wherein a flow guide sleeve (19) is fixed on the motor end cover, one end of the flow guide sleeve (19) is fixed on the motor end cover, the other end of the flow guide sleeve (19) is hinged to the floating shaft (18), and the flow guide sleeve (19) extends into the rotating shaft cavity.
6. The hydraulic motor pump with forced flow heat dissipation function of any one of claims 1-5, wherein the rotating shaft (14) is in rotary sealing engagement with the motor end cover through a mechanical sealing structure (20), the mechanical sealing structure (20) comprises a moving ring, a stationary ring and an elastic element, the moving ring is sleeved on the rotating shaft (14) and is located between the elastic element and the stationary ring in the axial direction of the rotating shaft (14), and the elastic element presses the moving ring against the stationary ring so that the stationary ring is pressed against the motor end cover.
7. The hydraulic motor pump with forced flow heat dissipation function according to claim 6, wherein the motor casing includes a casing inner layer (5) and a casing outer layer (4), and the motor casing cooling flow passage is provided on an outer peripheral surface of the casing inner layer (5).
8. The hydraulic motor pump with forced flow heat dissipation of claim 7, wherein the motor casing cooling flow channel is a spiral flow channel (51).
9. Hydraulic motor pump with forced flow heat dissipation according to any of claims 1-5, characterized in that the rotating shaft (14) and the transmission shaft (11) are fixed by transmission shaft connecting bolts.
10. The hydraulic motor pump with the forced flow heat dissipation function according to claim 9, wherein a blind mounting hole is formed in one end of the rotating shaft (14) connected to the transmission shaft (11), a rotating shaft through-flow hole (144) communicating the transmission shaft cavity with the rotating shaft cavity is formed in a bottom of the blind mounting hole, a threaded hole (145) for a transmission shaft connecting bolt to be screwed in to fix the transmission shaft (11) and the rotating shaft (14) is formed in the bottom of the blind mounting hole, a connecting plate is arranged at an end portion of the transmission shaft (11) inserted into one end of the rotating shaft (14), a bolt through-hole for the transmission shaft connecting bolt to pass through is formed in the connecting plate, and a transmission shaft through-flow hole communicated with the rotating shaft through-flow hole (144) is further formed in the connecting plate.
CN202210261505.8A 2022-03-16 2022-03-16 Hydraulic motor pump with forced flow heat dissipation function Active CN114567115B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210261505.8A CN114567115B (en) 2022-03-16 2022-03-16 Hydraulic motor pump with forced flow heat dissipation function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210261505.8A CN114567115B (en) 2022-03-16 2022-03-16 Hydraulic motor pump with forced flow heat dissipation function

Publications (2)

Publication Number Publication Date
CN114567115A true CN114567115A (en) 2022-05-31
CN114567115B CN114567115B (en) 2024-04-19

Family

ID=81720440

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210261505.8A Active CN114567115B (en) 2022-03-16 2022-03-16 Hydraulic motor pump with forced flow heat dissipation function

Country Status (1)

Country Link
CN (1) CN114567115B (en)

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1188669A (en) * 1966-12-26 1970-04-22 Magnesita S A Improvements in or relating to Rotary Pumps
GB1211660A (en) * 1968-05-10 1970-11-11 Bendix Corp A liquid cooled dynamoelectric machine
JP2001268850A (en) * 2000-03-21 2001-09-28 Ebara Corp Cooling device of electrical rotating machine
US20110110801A1 (en) * 2009-11-09 2011-05-12 Ji-Ee Industry Co., Ltd. Fluid pump for delivering cooled working fluid in an engine cooling system
CN204610169U (en) * 2015-03-22 2015-09-02 上海熊猫机械(集团)有限公司 A kind of multiple stage pump shaft Water-cooling circulating mechanism
DE102014117382A1 (en) * 2014-11-27 2016-06-02 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Electric machine and method for operating an electric machine
CN110601453A (en) * 2019-09-09 2019-12-20 河南森源重工有限公司 Liquid cooling motor and electric automobile
CN111271294A (en) * 2020-03-20 2020-06-12 中国矿业大学 Water-cooled permanent magnet direct-drive slurry pump
CN111561453A (en) * 2020-05-11 2020-08-21 山东省章丘鼓风机股份有限公司 Permanent magnet direct-drive slurry pump with water-cooling circulation structure
CN111594461A (en) * 2020-05-26 2020-08-28 烟台东德实业有限公司 Heat exchange type speed-increasing air pump
CN111917232A (en) * 2020-08-31 2020-11-10 精进电动科技股份有限公司 Motor shaft
CN111946580A (en) * 2020-08-25 2020-11-17 兰州理工大学 Digital variable hydraulic motor radial plunger pump
CN213151834U (en) * 2020-09-30 2021-05-07 卧龙电气驱动集团股份有限公司 Motor with self-circulation cooling function
CN113555996A (en) * 2021-07-19 2021-10-26 华域皮尔博格泵技术有限公司 High-efficiency high-power electronic water pump
CN114001007A (en) * 2021-11-02 2022-02-01 河南科技大学 Inclined shaft plunger type hydraulic motor pump

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1188669A (en) * 1966-12-26 1970-04-22 Magnesita S A Improvements in or relating to Rotary Pumps
GB1211660A (en) * 1968-05-10 1970-11-11 Bendix Corp A liquid cooled dynamoelectric machine
JP2001268850A (en) * 2000-03-21 2001-09-28 Ebara Corp Cooling device of electrical rotating machine
US20110110801A1 (en) * 2009-11-09 2011-05-12 Ji-Ee Industry Co., Ltd. Fluid pump for delivering cooled working fluid in an engine cooling system
DE102014117382A1 (en) * 2014-11-27 2016-06-02 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Electric machine and method for operating an electric machine
CN204610169U (en) * 2015-03-22 2015-09-02 上海熊猫机械(集团)有限公司 A kind of multiple stage pump shaft Water-cooling circulating mechanism
CN110601453A (en) * 2019-09-09 2019-12-20 河南森源重工有限公司 Liquid cooling motor and electric automobile
CN111271294A (en) * 2020-03-20 2020-06-12 中国矿业大学 Water-cooled permanent magnet direct-drive slurry pump
CN111561453A (en) * 2020-05-11 2020-08-21 山东省章丘鼓风机股份有限公司 Permanent magnet direct-drive slurry pump with water-cooling circulation structure
CN111594461A (en) * 2020-05-26 2020-08-28 烟台东德实业有限公司 Heat exchange type speed-increasing air pump
CN111946580A (en) * 2020-08-25 2020-11-17 兰州理工大学 Digital variable hydraulic motor radial plunger pump
CN111917232A (en) * 2020-08-31 2020-11-10 精进电动科技股份有限公司 Motor shaft
CN213151834U (en) * 2020-09-30 2021-05-07 卧龙电气驱动集团股份有限公司 Motor with self-circulation cooling function
CN113555996A (en) * 2021-07-19 2021-10-26 华域皮尔博格泵技术有限公司 High-efficiency high-power electronic water pump
CN114001007A (en) * 2021-11-02 2022-02-01 河南科技大学 Inclined shaft plunger type hydraulic motor pump

Also Published As

Publication number Publication date
CN114567115B (en) 2024-04-19

Similar Documents

Publication Publication Date Title
RU2005125705A (en) MOISTURIZING ROTARY CIRCULATION PUMP
JP2001520353A (en) Screw type vacuum pump with multiple rotors
US6626649B2 (en) Pump system employing liquid filled rotor
CN101985942A (en) Tangent pump for ships
CN114567115A (en) Hydraulic motor pump with forced flow heat dissipation function
CN218929762U (en) Pump spraying propeller
CN106762609A (en) A kind of high-tension shielding Gerotor pump
CN210034532U (en) Electronic four-way valve structure
CN206054376U (en) Axial-flow type cooling fan intermediate sleeve with shoe cream room
CN113898681A (en) Shafting lubricating structure of parallel hydraulic retarder
CN114001007B (en) Inclined shaft plunger type hydraulic motor pump
CN220527823U (en) Rotor driving motor and aircraft
CN111379859A (en) Flushing-free mechanical seal
CN219974618U (en) Electronic water pump, thermal management system and vehicle
CN114001007A (en) Inclined shaft plunger type hydraulic motor pump
CN206054365U (en) Axial-flow type cooling fan drive shaft with shoe cream room
CN212155795U (en) Flushing-free mechanical seal
CN219865461U (en) Cam type double-rotor pump with frequency conversion function
CN113489217B (en) Self-triggering type cooling branch arranged in wet motor
CN219639079U (en) Liquid cooling pump
CN219833929U (en) High-pressure fluid cooling lubrication motor structure for aviation
CN217055715U (en) Electric water pump structure with water-cooling control panel function
CN114001036B (en) Miniature hydraulic suspension mechanical pump and assembly method thereof
CN107524654A (en) A kind of vane type servo oscillating hydraulic cylinder and apply its plant equipment
CN108131097B (en) Screw drilling tool reversing shaft for petroleum and natural gas exploitation

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant